Disk-harrow adjustment.



R. H. McGAUGI-IBY. DISK HARROW ADJUSTMENT. APPLICATION FILED NOV. 25,1908.

Patented Mar. 15, 1910.

INVENTOR 'RALPH H. Mc CAUGHEY.

, WITNESSES H15 ATTORNEY.

ANDREW a GRANAM co. more-urnosmmm WASNINGION. n. c.

/ UNITED STATES PATENT CFFTQE.

RALPH H. MoCAUGI-IEY, 0F CAMPBELL, CALIFORNIA.

DISK-HARROW ADJUSTMENT.

To all whom it may concern:

Be it known that I, RALPH H. Mo- CAUGHEY, citizen of the United States,residing at Campbell, in the county of Santa Clara and State ofCalifornia, have invented new and useful Improvements in Disk-HarrowAdjustments, of which the following is a specification.

My invention relates to a means for adjusting disk or like harrows orplows to secure any angle of said disks with relation to the line oftravel.

It consists in a swivel mounting and support for the dislocarryingframes, and connections whereby said frames and the disks may be turnedwith relation to the line of travel.

It also comprises details of construction which will be more fullyexplained by reference to the accompanying drawings, in which Figure 1is a side elevation. Fig. 2 is a plan. Fig. 3 is a detail in perspectiveof the swivel mounting.

It is the object of my invention to provide a simple, easily operateddevice for changing the planes of disk harrows and the like withrelation to the line of travel of the apparatus.

As shown in the drawings, A is the main frame having a pole to whlch theteam may be attached, and 2 and 3 are disk sections independentlymounted in supporting frames i. The frames of these disk sections areconnected with the main frame A by means of yokes or clevises 5 and 6.The clevis 5 in each case has its vertical portion firmly bolted to thestraight rear portion of the main frame and near the end. Through therearwardly projecting ends of this yoke extends a bolt 7 and this boltforms a pivot which carries the inside yoke or clevis 6 which isturnable upon the bolt. This inside clevis is clamped or secured to therear or disk frame, and the latter and the disks are thus capable ofbeing swiveled about the vertical pivot bolt 7. One of these devices isrepresented at each end of the pole frame.

8 are lever arms bolted to the inner clevis or yoke extending therefromtoward the center, and connecting rods 9 are pivoted to the inner endsof these levers, and extend forwardly along the pole as shown. The frontends of these rods 9 pass through the ends of yokes 10, mounted upon aswinging Specification of Letters Patent.

Application filed November 25, 1908.

PatentedMar. 15, 1910.

Serial No. 464,433.

lever 11, the ends of which project up, and each end carries one ofthese yokes. The bight of the lever 11 is pivoted and turnable, on pivotbolt 15, preferably beneath the pole as shown. By means of these yokes,the front ends of the connecting rods being screw-threaded, lock nutsare employed, and by the use of these nuts, a very accurate adjustmentmay be made in the length of the levers, and the consequent positions ofthe disks.

12 is a hand lever rigidly connected so as to turn the fulcrumed doublelever 11, and thus through the connecting rods 9 and the lever arms 8 toswing the disks to one side or the other. The hand-lever may extendwithin reach of the operator on the seat of the machine, and a pawl 13is adapted to engage with a segment rack 14 centered to 15 to hold theparts at any desired adjustment.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. The combination in a disk harrow adjusting device,of a main frame and pole, disk-carrying frames, vertical yokes fixed tothe outer rear ends of the main frame, transversely movable clevisespivoted within said yokes, lever arms connected with the clevises andthrough the clevises with the disk frames, and connecting rods andmechanism by which said rods are reciprocated to change the angle of thetravel of the disks.

2. The combination in a disk harrow adjusting device, of a main framehaving yokes bolted vertically to its rear outer ends, clevises pivotedwithin said yokes and turnable transversely, disk-carrying framesconnected with the clevises and turnable transversely therewith, leverarms extending inwardly from the clevises, a rocking lever having yokesat its outer end, rods con necting the lever arms of the clevises withsaid last-named yokes, and means for adjusting the length of said rods.

3. The combination in a disk harrow adjusting device, of a main draftframe and pole, yokes fixed vertically at opposite sides ,of the rearend of said frame, clevises pivoted to swing transversely with relationto the yokes, disk-carrying frames with which the clevises areconnected, lever arms extending inwardly from said clevises, connectingrods extending from the inner ends of the level arms, a double rocklever pivoted to the pole, yokes and adjusting devices on said leverWith which the rods are connected and ahand-lever and rack whereby therock lever may be moved and the angle of the disks changed.

In testimony whereof I have hereunto set my han d in presence of twosubscribing Witmesses.

RALPH H. MoGAUGI-IEY.

Witnesses THos. A. ROBINSON, GEO. WHITNEY.

